Method of operating a drywall screwdriver, computer program and drywall screwdriver

Abstract

The invention relates to a method for operating a drywall screwdriver (1), an electric motor (3) of the drywall screwdriver (1) being driven by means of a plurality of temporally spaced individual pulses (11) in order to allow a user to influence the countersinking of a screw (7) in a workpiece (10) in pulses. According to the invention, a screwing tool (8) that is mechanically coupled to the electric motor (3) and can be brought into engagement with the screw (7) is moved further by a predetermined angle of rotation (a) with each of the individual pulses (11).

1 . A method for operating a drywall screwdriver, the method comprising the following method steps:
 driving an electric motor of the drywall screwdriver with a plurality of temporally spaced individual pulses configured to allow a user to influence a countersinking of a screw in a workpiece in pulses, and   manipulating a screwing tool that is mechanically coupled to the electric motor and configured to engage with the screw by a predetermined angle of rotation (α) with each pulse of the plurality of temporally spaced individual pulses.   
     
     
         2 . The method of  claim 1 , wherein an amplitude (P) and/or duration (Li) of the plurality of temporally spaced individual pulses is determined independently of a measured torque of the countersinking of the screw. 
     
     
         3 . The method of  claim 1 , wherein an amplitude (P) and/or duration (t n ) of the plurality of temporally spaced individual pulses is determined in an exclusively path-controlled manner as a function of the predetermined angle of rotation (α) of the screwing tool. 
     
     
         4 . The method of  claim 1 , characterized in that wherein the predetermined angle of rotation (α) is the same for any one of the plurality of temporally spaced individual pulses. 
     
     
         5 . The method of  claim 1 , wherein the plurality of temporally spaced individual pulses are substantially rectangular in shape, with a preferably ramp-shaped rise and/or a ramp-shaped fall. 
     
     
         6 . The method of  claim 1 , wherein any one of the plurality of temporally spaced individual pulses are equally spaced in duration. 
     
     
         7 . The method of  claim 1 , wherein any one of the plurality of temporally spaced individual pulses are spaced apart from one another by between 0.5 seconds and 2.0 seconds intervals, for example spaced apart from one another by 1.0 seconds to 1.5 seconds intervals. 
     
     
         8 . The method of  claim 1 , wherein, measured values of a position sensor of the electric motor are used to detect the predetermined angle of rotation (α) of the screwing tool, the position sensor being configured to detect a change in position of a rotor of the electric motor relative to a stator of the electric motor. 
     
     
         9 . The method of  claim 1 , wherein the electric motor is a brushless direct current motor. 
     
     
         10 . The method of  claim 1 , characterized in that wherein the drywall screwdriver further comprises a mechanical depth stop. 
     
     
         11 . A non-transient computer-readable storage medium having instructions embodied thereon, the instructions being executable by one or more processors to perform a method for operating a drywall screwdriver, the method comprising:
 receiving, via a control device, an input from a user to direct the drywall screwdriver; and   transmitting, via the control device, a control command signal, wherein the control command signal is configured to:
 instruct an electric motor of the drywall screwdriver to transmit a plurality of temporally spaced individual pulses to a screwing tool coupled to the electric motor, and 
 execute, via the screwing tool, a countersinking of a screw, wherein the screwing tool is configured to manipulate the screw by a predetermined angle of rotation (α) with each pulse of the plurality of temporally spaced individual pulses. 
   
     
     
         12 . (canceled) 
     
     
         13 . The method of  claim 11 , wherein an amplitude (P) and/or duration (t n ) of the plurality of temporally spaced individual pulses is determined independently of a measured torque of the countersinking of the screw. 
     
     
         14 . The method of  claim 11 , wherein any one of the plurality of temporally spaced individual pulses are spaced apart from one another by between 0.5 seconds and 2.0 seconds intervals, for example spaced apart from one another by 1.0 seconds to 1.5 seconds intervals. 
     
     
         15 . The method of  claim 11 , wherein measured values of a position sensor of the electric motor are used to detect the predetermined angle of rotation (α) of the screwing tool, the position sensor being configured to detects a change in position of a rotor of the electric motor relative to a stator of the electric motor. 
     
     
         16 . The method of  claim 11 , wherein the electric motor is a brushless direct current motor and the drywall screwdriver further comprises a mechanical depth stop. 
     
     
         17 . A drywall screwdriver, comprising:
 an electric motor configured to facilitate a countersinking of a screw in a workpiece;   a screwing tool mechanically coupled to the electric motor and configured to removably engage with the screw; and   a control device configured to receive and translate instructions from a user and direct, via a control command signal, operation of the electric motor,
 wherein the control command signal is configured to instruct the electric motor to transmit a plurality of temporally spaced individual pulses to the screwing tool to facilitate the countersinking of the screw, and 
 wherein the screwing tool is configured to countersink the screw by a predetermined angle of rotation (α) with each pulse of the plurality of temporally spaced individual pulses. 
   
     
     
         18 . The drywall screwdriver of  claim 17 , wherein an amplitude (P) and/or duration (t n ) of the plurality of temporally spaced individual pulses is determined independently of a measured torque of the countersinking of the screw. 
     
     
         19 . The drywall screwdriver of  claim 17 , wherein any one of the plurality of temporally spaced individual pulses are spaced apart from one another by between 0.5 seconds and 2.0 seconds intervals, for example spaced apart from one another by 1.0 seconds to 1.5 seconds intervals. 
     
     
         20 . The drywall screwdriver of  claim 17 , wherein measured values of a position sensor of the electric motor are used to detect the predetermined angle of rotation (α) of the screwing tool, the position sensor being configured to detects a change in position of a rotor of the electric motor relative to a stator of the electric motor. 
     
     
         21 . The drywall screwdriver of  claim 17 , wherein the electric motor is a brushless direct current motor and the drywall screwdriver further comprises a mechanical depth stop.